Table 1.
Electrical Properties of Cells and Tissues
| Electrical characteristic | Definition | Unit | Symbol | Biological range |
|---|---|---|---|---|
| Voltage | Potential energy per unit charge | Volt (W A−1) | V | −10–−100 mV |
| Resistance | The opposition of electric current | Ohm (V A−1) | Ω | 0.1–1 kΩ |
| Current | Charge transfer per unit time | Amp (C S−1) | A | nA–mA |
| Capacitance | The ability to store charge | Farad (C V−1) | F | 1 nF–1 pF |
| Permittivity | The extent that an electric field affects a material | Farads/meter (F m−1) | ɛ | 10–10,000 |
| Conductivity | The ability to conduct current | Siemens (S m−1) | σ | 1mσ–1 μσ |